Did you tell her that it's because they're for construction workers and you don't want to be a class imposter?
I don't know anything about Wicked but you shouldn't say you hate musicals until you try Singin' in the Rain. Not liking musicals is the movie version of people who say they like all music except country.
I love when people complain about musicals being unrealistic while they watch a tree and racoon become friends and whatever an ewok is